package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {

    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill))")
    public void autoFillPointcut() {}

    @Before("autoFillPointcut()")
    public void autoFillAdvice(JoinPoint joinPoint) {
        log.info("AutoFill公共代码段填充");
        // 获取注解类型 update or insert
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        AutoFill annotation = signature.getMethod().getAnnotation(AutoFill.class);
        OperationType operationType = annotation.value();
        // 获取参数(需要填充的对象)
        Object[] args = joinPoint.getArgs();
        if(args == null || args.length == 0) return;
        Object entity = args[0];
        // 获取要填充的内容，当前时间，当前用户Id
        LocalDateTime now = LocalDateTime.now();
        Long currentId = BaseContext.getCurrentId();
        // 设置属性
        if(operationType == OperationType.INSERT) {
            try {
                Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
                Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setCreateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
                Method setCreateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                setUpdateUser.invoke(entity, currentId);
                setUpdateTime.invoke(entity, now);
                setCreateUser.invoke(entity, currentId);
                setCreateTime.invoke(entity, now);
            } catch (Exception e) {
                e.printStackTrace();
            }
        } else {
            try {
                Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
                Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                setUpdateUser.invoke(entity, currentId);
                setUpdateTime.invoke(entity, now);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

    }
}
